I am exactly 12 days late of my period. The day after my period was to arrive I took a pregnancy test and it read negative. However, for the past two weeks or so, I've been feeling alot nausea, dizziness, a loss of appetite, fatigue and now when I get in a car I experience slight car sickness (I'm 23 and have never had car sickness); I've experienced hot flashes today, where I actually had my office so cold(thermostat was on 60 and it was only 65 outside) no one wanted to come in; occasional moodiness, alot of tummy pain. I plan to go the doctor next week but should I go ahead and try another test beforehand?